Award Data

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A new thermal protection concept is described and an investigation to determine its feasibility and quantify its performance is proposed. The concept involves placing an array of small cavities in the nose region of a typical hypersonic interceptor (projectile, missile, or submunition). The cavities act as multiple Helmholtz resonators, and can be made to operate in a very predictable manner to ...

We propose to design and fabricate an optical filter that can be tuned continuously from 1.5 um to 2.5 um with a linewidth less than 1 nm. Our system consists of 2 separate filters that can each be electronically tuned. One provides a large free spectral range, and the other provides a narrow linewidth.

Controlling millimeter radio frequency waves with optical signals is a requirement for military communications and radar systems. The advances in the past decade have led to photonic sensors and switches that utilize light beams interacting with RF devices. New capabilities extending to higher frequencies and working over multiple frequency bands are possible using a combination of nonlinear op ...

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We will demonstrate the feasibility of a new type of airblast pressure sensor which will provide valid overpressure histories for airblast waves travelling in directions up to 90 degrees or more to the direction with which the sensor is aligned. Our specific technical objectives for Phase I are: 1) to develop a quantitative sensor design for assessment of feasibility, 2) to predict the expected p ...

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AN ANALYTIC MODEL OF A WIDE FIELD, PHASED ARRAY IMAGING SYSTEM WILL BE DEVELOPED. THE MODEL IS BASED ON A MEASUREMENT SYSTEM CAPABLE OF ERROR MEASUREMENT DIRECTLY WITH RESPECT TO THE FINAL IMAGE PLANE. THE BEAMS FROM INDIVIDUAL SUBAPERTURES WILL BE COMPACTED AND CONFORMALLY MAPPED TO A DEMAGNIFIED PUPIL. WE WILL DEVELOP NONREDUNDANT, CODED APERTURE MASKS TO BE INSERTED AT THIS COMPACT PUPIL WHICH ...

DIAGNOSTx Technologies proposes to develop a PC-based instrument for the clinical evaluation of peripheral and central hearing deficits, which will allow audiometric, otoacoustic emissions, evoked-potentials and immittance testing. The integrated system will be capable of assessing hearing sensitivity for speech and pure tones, of evaluating the integrity outer hair cells and auditory central ner ...